کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4769267 | 1425533 | 2017 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A novel technology for vanadium and chromium recovery from V-Cr-bearing reducing slag
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Wastewater produced in the process of vanadium extraction from vanadium slag is treated by reduction and neutralization which produces a V-Cr-bearing reducing slag. The recovery of vanadium and chromium from this slag was investigated by a comprehensive route including sulfuric acid leaching, selective oxidation of low valent vanadium and hydrolysis precipitation of vanadium and chromium. Under the most suitable conditions including a leaching time of 4 h, sulfuric acid addition of 74 wt% and leaching temperature of 90 °C, the leaching of vanadium and chromium reached 90.9% and 97.8%, respectively. The vanadium of low valent in leach solution was selectively oxidized by manganese dioxide with the oxidation of 96.9%, while Cr(III) was not oxidized. The hydrolysis precipitation method was used to separate and recover V(V) and Cr(III), and the recovery of vanadium and chromium reached 98.3% and 99.1%, respectively. The overall vanadium and chromium recovery was 86.5% and 96.9%, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hydrometallurgy - Volume 171, August 2017, Pages 116-122
Journal: Hydrometallurgy - Volume 171, August 2017, Pages 116-122
نویسندگان
Mingyu Wang, Bianfang Chen, Sheng Huang, Xuewen Wang, Biao Liu, Qi Ge, Shushan Xie,